<html>
        <head>
        </head>
        <body>
            {{range .}}
                {{if gt .Age 18}}
                <p>hello, old man, {{.Name}}</p>
                {{else}}
                <p>hello,young man, {{.}}</p>
                {{end}}
                {{with .Name}}
                <p> hello, this is with {{.}}</p>
                {{end}}
            {{end}}
        </body>
</html>
